Quote:
Originally Posted by shoe2728
Ok checked out the transfer box.
So you plug your 50amp cord into the 30 amp outlet, using your 50 to 30 amp adapter. then plug another cord into the 20 amp outlet and this cord leads to the transfer box which is now wired in between the second a/c and breaker box. So when you plug in the 20 amp cord the tx box senses power and auto switches the second A/C to the 20 amp outlet. Does all that sound about right.
You could also do the same thing with a 3 way light switch, but you would have to flip the switch manually. Probably wouldnt be exactly to code but would work.
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Yes you could do that, the only problem, the ends of the 20 amp plug would be hot, when you connect to a 50 amp service. IF you did not remember to flip the switch you would have a back feed into the 20 amp, & IF you accidently tried to plug it in the outlet, you would get a big arc! The transfer switch being used in this application, is a DPDT (Double Pole, Double Throw) relay, that cuts out the 20 amp going only to the a/c, so you will not get the back feed.